Fluid FlowCONTINUITY EQUATIONThis equation tells us that the pressure exerted by a column of water is directly proportional tothe height of the column and the density of the water and is independent of the cross-sectionalarea of the column. The pressure thirty feet below the surface of a one inch diameter standpipeis the same as the pressure thirty feet below the surface of a large lake.Example 1:If the tank in Figure 1 is filled with water that has a density of 62.4 lbm/ft3, calculate thepressures at depths of 10, 20, and 30 feet.Solution:Pr h ggcP10 feet62.4lbmft310 ft32.17ftsec232.17lbm ftlbf sec2624lbfft21 ft2144 in24.33lbfin2P20 feet62.4lbmft320 ft32.17ftsec232.17lbm ftlbf sec21248lbfft21 ft2144 in28.67lbfin2Rev. 0 Page 5 HT-03